Which element in group 3 has the largest atomic radius?

Therefore Sodium (Na) has the largest atomic radius.

Which element in period 3 has the largest atomic radius?

• Atomic radius decreases from left to right within a period. This is caused by the increase in the number of protons and electrons across a period. …
• Considering this trend Sodium is having a highest atomic radius in 3rd period.

Which elements has the largest atomic radius?

Atomic radii vary in a predictable way across the periodic table. As can be seen in the figures below, the atomic radius increases from top to bottom in a group, and decreases from left to right across a period. Thus, helium is the smallest element, and francium is the largest.

Which has largest radius?

Thus O2− has a minimum z-effective thus largest radius.

Which element has the largest atomic radius in Period 4?

For Period 3, the Group1 Alkali Metal (potassium, lowest Z) has the largest atomic radius and the Group 7/17 Halogens & Group 0/18 Noble Gas (bromine & krypton, highest Z’s) have the smallest atomic radii (there is some uncertainty in the noble gas radii).
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Why is the ionic radius of K+ smaller than CL?

In other words, K+ has bigger effective nuclear charge than Cl− , which translates to a bigger net positive charge felt by the outermost electrons. This will compress the energy levels a bit and make the ionic radius smaller for the potassium cation.

Does atomic radius increase Period 3?

Explanation of this trend

Going across period 3: the number of protons in the nucleus increases so … … therefore the force of attraction between the nucleus and the electrons increases … and the atomic radius decreases.

What element has the second largest atomic radius?

(A) Trends in the Atomic Radius of Elements in Period 2

What has the smallest atomic radius?

Explanation: Helium has the smallest atomic radius. This is due to trends in the periodic table, and the effective nuclear charge that holds the valence electrons close to the nucleus.

Which ion has the largest atomic radius?

1 Answer. Ernest Z. K+ has the largest radius.

Which is larger F or Na+?

Na+ has smaller size than F- because both Na+ and F- have equal number of electrons i.e.10 . After losing an electron Na will have less electron cloud and more effective nuclear charge whereas F after gaining an electron will have less effective nuclear charge than the parent atom so the size increases .

Which has a larger radius Na or Na 1?

So p/e ratio is 1 and Na+ ion nucleus has eleven positive (p) charge and ten negative charge (e). … As is known from the chemistry course, when the element loses electron (turn into cation, with positive charge), the atom radius is getting low, so obviously Na+ is smaller than Na.

Which has the largest radius Co3+ Mn3+ fe3+ Cr3+?

Fe 3+ has highest radii because by going left to right in the periodic table , the size get decreased so .. Fe 3+ >Co3+ >Cr3+ >Mn3+ .

Which element in Group 2 has the smallest atomic radius?

Trends in Atomic Radius of Group 2 Elements

How do you find atomic radius?

Atomic radius is determined as the distance between the nuclei of two identical atoms bonded together. The atomic radius of atoms generally decreases from left to right across a period. The atomic radius of atoms generally increases from top to bottom within a group.

What is the atomic radius of SI?

210 pm